<template>
    <div>
        <!-- 面包屑导航区-->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
        </el-breadcrumb>
        <!--卡片视图区域 -->
        <el-card>
            <!--搜索与添加区域-->
            <el-row :gutter="20">
                <el-col :span="8">
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                        <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
                </el-col>
            </el-row>
            <!--用户列表区域-->
            <el-table :data="userlist" border stripe>
                <el-table-column type="index" label="#"></el-table-column>
                <el-table-column label="姓名" prop="username"></el-table-column>
                <el-table-column label="邮箱" prop="email"></el-table-column>
                <el-table-column label="电话" prop="mobile"></el-table-column>
                <el-table-column label="角色" prop="role_name"></el-table-column>
                <el-table-column label="状态">
                    <template slot-scope="scope">
                        <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
                        </el-switch>
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="180px">
                    <template slot-scope="scope">  <!--slot-scope="scope"-->
                        <!--修改按钮-->
                        <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                        <!--删除按钮-->
                        <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                        <!--分配角色按钮-->
                        <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                            <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
                        </el-tooltip>

                    </template>
                </el-table-column>
            </el-table>,
            <!--分页区域-->
            <el-pagination
                    @size-change="handleSizeChange"
                    @current-change="handleCurrentChange"
                    :current-page="queryInfo.pagenum"
                    :page-sizes="[1, 2, 5, 10]"
                    :page-size="queryInfo.pagesize"
                    layout="total, sizes, prev, pager, next, jumper"
                    :total="total">
            </el-pagination>
        </el-card>
        <!--添加用户的对话框-->
        <el-dialog
                title="添加用户"
                :visible.sync="addDialogVisible"
                width="50%" @close="addDialogClosed">
            <!--内容主体区域-->
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
                <el-form-item label="用户名" prop="username">
                    <el-input v-model="addForm.username"></el-input>
                </el-form-item>
                <el-form-item label="密码" prop="password">
                    <el-input v-model="addForm.password"></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="addForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机号" prop="mobile">
                    <el-input v-model="addForm.mobile"></el-input>
                </el-form-item>

            </el-form>
            <!--底部区域-->
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addUser">确 定</el-button>
            </span>
        </el-dialog>
        <!--修改用户的对话框-->
        <el-dialog
                title="修改用户"
                :visible.sync="editDialogVisible"
                width="50%" @close="editDialogClosed">
            <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
                <el-form-item label="用户名">
                    <el-input v-model="editForm.username" disabled></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="editForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机号" prop="mobile">
                    <el-input v-model="editForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
    <el-button @click="editDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="editUserInfo">确 定</el-button>
  </span>
        </el-dialog>
        <!--分配角色的对话框-->
        <el-dialog
                title="分配角色"
                :visible.sync="setRoleDialogVisible"
                width="50%" @close="setRoleDialogClosed">
            <div>
                <p>当前的用户:{{userInfo.username}}</p>
                <p>当前的角色:{{userInfo.role_name}}</p>
                <p>当前新角色:
                    <el-select v-model="selectedRoleId" placeholder="请选择">
                        <el-option
                                v-for="item in rolesList"
                                :key="item.id"
                                :label="item.roleName"
                                :value="item.id">
                        </el-option>
                    </el-select>
                </p>
            </div>
            <span slot="footer" class="dialog-footer">
    <el-button @click="setRoleDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
  </span>
        </el-dialog>

    </div>
</template>

<script>
    export default {
        data(){
            //验证邮箱的规则。手机号
            var checkEmail = (rule,value,cb) =>{
                //验证邮箱的正则表达式
                const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
                if (regEmail.test(value)){
                //    合法的邮箱
                    return cb()
                }
                cb(new Error('请输入合法的邮箱'))
            }
            //验证手机号的规则
            var checkMobile = (rule,value,cb) =>{
                //验证手机号的正则表达式
                const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/

                if (regMobile.test(value)){
                    //    合法的手机号
                    return cb()
                }
                cb(new Error('请输入合法的手机号'))
            }
            return {
                //获取用户列表的参数对象
                queryInfo:{
                    query:'',
                    //当前的页数
                    pagenum:1,
                    //当前每页显示多少条数据
                    pagesize:2
                },
                userlist:[],
                total:0,
                //控制添加用户对话框的显示与隐藏
                addDialogVisible:false,
                //添加用户的表单数据
                addForm:{
                    username: '',
                    password:'',
                    email:'',
                    mobile:''
                },
                //添加表单的验证规则对象
                addFormRules:{
                    username:[
                        {
                            required:true,
                            message:'请输入用户名',
                            trigger:'blur'
                        },
                        {
                            min:3,
                            max:10,
                            message:'用户名长度在3~10个字符之间',
                            trigger:'blur'
                        }
                    ],
                    password:[
                        {
                            required:true,
                            message:'请输入密码',
                            trigger:'blur'
                        },
                        {
                            min:6,
                            max:15,
                            message:'用户名长度在6~15个字符之间',
                            trigger:'blur'
                        }
                    ],
                    email:[
                        {
                            required:true,
                            message:'请输入邮箱',
                            trigger:'blur'
                        },
                        {
                            validator:checkEmail,
                            trigger: 'blur'
                        }
                    ],
                    mobile:[
                        {
                            required:true,
                            message:'请输入手机号',
                            trigger:'blur'
                        },
                        {
                            validator:checkMobile,
                            trigger: 'blur'
                        }
                    ],
                },
                //控制修改用户对话框的显示与隐藏
                editDialogVisible:false,
                //查询到的用户信息对象
                editForm:{},
                //修改表单的验证规则对象
                editFormRules:{
                    email:[
                        {
                            required:true,
                            message:'请输入用户邮箱',
                            trigger:'blur'
                        },
                        {
                            validator:checkEmail,
                            trigger: 'blur'
                        }

                    ],
                    mobile:[
                        {
                            required:true,
                            message:'请输入用户手机号',
                            trigger:'blur'
                        },
                        {
                            validator:checkMobile,
                            trigger: 'blur'
                        }

                    ]
                },
                //控制分配角色对话框的显示与隐藏
                setRoleDialogVisible:false,
                //需要被分配角色的用户信息
                userInfo:{},
                //所有角色的数据列表
                rolesList:[],
                //已选中的角色id值
                selectedRoleId:''
            }
        },
        created() {
            this.getUserList()
        },
        methods:{
            async getUserList(){
                const {data:res} = await this.$http.get('users',{
                    params:this.queryInfo
                })
                if (res.meta.status !== 200){
                    return this.$message.error('获取用户列表失败！')
                }
                this.userlist = res.data.users
                this.total = res.data.total
            },
            //监听 pagesize 改变的事件
            handleSizeChange(newSize){
                this.queryInfo.pagesize = newSize
                this.getUserList()
            },
            //监听 页码值 改变的事件
            handleCurrentChange(newPage){
                this.queryInfo.pagenum = newPage
                this.getUserList()
            },
            //今天switch开关状态的改变
            async userStateChanged(userInfo){
                const {data:res} = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
                if (res.meta.status !== 200){
                    userInfo.mg_state = !userInfo.mg_state
                    return this.$message.error('更新用户状态失败！')
                }
                this.$message.success('更新用户状态成功！')
            },
            //监听添加用户对话框的关闭事件
            addDialogClosed(){
                this.$refs.addFormRef.resetFields()
            },
            //点击按钮添加新用户
            addUser(){
                this.$refs.addFormRef.validate(async valid => {
                    if (!valid) return
                //    可以发起添加用户的网络请求
                    const {data:res} = await this.$http.post('users',this.addForm)
                    if (res.meta.status !== 201){
                        this.$message.error('添加用户失败！')
                    }
                    this.$message.success('添加用户成功！')
                //    隐藏添加用户的对话框
                    this.addDialogVisible = false
                //    重新获取用户列表数据
                    this.getUserList()
                })
            },
            //展示编辑用户的对话框
            async showEditDialog(id){
                const {data:res} = await this.$http.get('users/'+id)
                if (res.meta.status !== 200){
                    return this.$message.error('查询用户信息失败！')
                }
                this.editForm = res.data
                this.editDialogVisible = true
            },
            //监听修改用户对话框的关闭事件
            editDialogClosed(){
                this.$refs.editFormRef.resetFields()
            },
            //修改用户信息并提交
            editUserInfo(){
                this.$refs.editFormRef.validate(async valid => {
                    if (!valid) return
                //    发起修改用户信息的数据请求
                    const {data:res} = await this.$http.put('users/'+this.editForm.id,
                        {
                            email:this.editForm.email,
                            mobile:this.editForm.mobile
                        })
                    if (res.meta.status !== 200){
                        return this.$message.error('更新用户信息失败！')
                    }
                //    关闭对话框
                    this.editDialogVisible = false
                //    刷新数据列表
                    this.getUserList()
                //    提示修改成功
                    this.$message.success('更新用户信息成功！')
                })
            },
            //根据id删除对应的用户信息
            async removeUserById(id){
            //    弹窗询问用户是否删除数据
                const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
                    confirmButtonText: '确定',
                    cancelButtonText: '取消',
                    type: 'warning'
                }).catch(err =>  err)
            //    如果用户确认删除。则返回值为字符串 confirm
            //    如果用户取消了删除。则返回值为字符串 cancel
                if (confirmResult !== 'confirm'){
                    return this.$message.info('已取消删除')
                }
                const {data:res} =await this.$http.delete('users/'+id)
                if (res.meta.status !== 200){
                    return this.$message.error('删除用户失败！')
                }
                this.$message.success('删除用户成功！')
                this.getUserList()
            },
            //展示分配角色的对话框
            async setRole(userInfo){
                this.userInfo = userInfo
                //在展示对话框之前获取所有角色的列表
                const {data:res} = await this.$http.get('roles')
                if (res.meta.status !== 200){
                    return this.$message.error('获取角色列表失败！')
                }
                this.rolesList = res.data
                this.setRoleDialogVisible = true
            },
            //点击按钮分配角色
            async saveRoleInfo(){
                if (!this.selectedRoleId){
                    return this.$message.error('请选择要分配的角色!')
                }
                const {data:res} = await this.$http.put(`users/${this.userInfo.id}/role`,
                    {
                        rid:this.selectedRoleId
                    }
                )
                if (res.meta.status !== 200){
                    return this.$message.error('更新角色失败!')
                }
                this.$message.success('更新角色成功!')
                this.getUserList()
                this.setRoleDialogVisible = false
            },
            //监听分配角色对话框的关闭事件
            setRoleDialogClosed(){
                this.selectedRoleId = ''
                this.userInfo = {}
            }

        }
    }
</script>

<style lang="less" scoped>

</style>